一条抽样的英文的题目Eggs sold in a supermarket are packed in boxes of 12.For each egg,the probability that it is cracked is 0.05,independently of all other eggs.A random sample of n boxes is selected and the variance of the sample mean numb

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一条抽样的英文的题目Eggssoldinasupermarketarepackedinboxesof12.Foreachegg,theprobabilitythatitiscrackedis0.05,

一条抽样的英文的题目Eggs sold in a supermarket are packed in boxes of 12.For each egg,the probability that it is cracked is 0.05,independently of all other eggs.A random sample of n boxes is selected and the variance of the sample mean numb
一条抽样的英文的题目
Eggs sold in a supermarket are packed in boxes of 12.For each egg,the probability that it is cracked is 0.05,independently of all other eggs.A random sample of n boxes is selected and the variance of the sample mean number of cracked eggs in a box is 0.019.Find the values of n.
鸡蛋12个一盒，每个鸡蛋破掉的概率是0.05且相对独立。
现在有n盒鸡蛋，破掉的鸡蛋数的样本方差是0.019，求n的值。

一条抽样的英文的题目Eggs sold in a supermarket are packed in boxes of 12.For each egg,the probability that it is cracked is 0.05,independently of all other eggs.A random sample of n boxes is selected and the variance of the sample mean numb
这道题要用公式解
设X为破掉的蛋数,则X服从二项分布,实验次数是12n,成功率为0.05
则方差为 12n*0.05*0.95
12n*0.05*0.95＝0.019
得n=1/30
虽然不合实际,不过是这么解了

一条抽样的英文的题目Eggs sold in a supermarket are packed in boxes of 12.For each egg,the probability that it is cracked is 0.05,independently of all other eggs.A random sample of n boxes is selected and the variance of the sample mean numb 质检抽样检查的英文英语语法问题（the)的Apples are usually sold by___weight and eggs are sometimes sold by ___dozen.a.the;the b./;the参考答案是a.对伐?为什么? 急.椭圆的题目和一道抽样概率题等距抽样,整群抽样,分成抽样的区别为了降低抽样过程中遇到的困难英文怎么说? How many eggs do you buy?的英文回答 How many eggs do you buy?的英文回答 sold的原型是什么 sold的中文概率抽样的含义? 抽签抽样的含义随机抽样的优缺点? 抽样推断的特点? 滚雪球抽样的定义审计抽样的风险审计抽样的理解关于统计学的题目在简单随机抽样时,当总体单位数较多时,若抽样比例为64％,则不重复抽样的抽样平均误差比重复抽样的抽样平均误差大约减少40％这个是怎么算出来的呀求前辈们指导